[Qemu-devel] [PATCH 5/6] usb-xhci: add exit function

[arei.gonglei]

From: Gonglei <arei.gong...@huawei.com>

clean up xhci resource when xhci pci device exit

Signed-off-by: Gonglei <arei.gong...@huawei.com>
---
 hw/usb/hcd-xhci.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 54dea16..4c266e7 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -3617,6 +3617,41 @@ static int usb_xhci_initfn(struct PCIDevice *dev)
     return 0;
 }
 
+static void usb_xhci_exit(PCIDevice *dev)
+{
+    int i;
+    XHCIState *xhci = XHCI(dev);
+
+    memory_region_del_subregion(&xhci->mem, &xhci->mem_cap);
+    memory_region_del_subregion(&xhci->mem, &xhci->mem_oper);
+    memory_region_del_subregion(&xhci->mem, &xhci->mem_runtime);
+    memory_region_del_subregion(&xhci->mem, &xhci->mem_doorbell);
+
+    memory_region_destroy(&xhci->mem_cap);
+    memory_region_destroy(&xhci->mem_oper);
+    memory_region_destroy(&xhci->mem_runtime);
+    memory_region_destroy(&xhci->mem_doorbell);
+
+    for (i = 0; i < xhci->numports; i++) {
+        XHCIPort *port = &xhci->ports[i];
+        memory_region_del_subregion(&xhci->mem, &port->mem);
+        memory_region_destroy(&port->mem);
+    }
+
+    /* destroy msix memory region */
+    if (dev->msix_table && dev->msix_pba
+        && dev->msix_entry_used) {
+        memory_region_del_subregion(&xhci->mem, &dev->msix_table_mmio);
+        memory_region_destroy(&dev->msix_table_mmio);
+        memory_region_del_subregion(&xhci->mem, &dev->msix_pba_mmio);
+        memory_region_destroy(&dev->msix_pba_mmio);
+    }
+
+    memory_region_destroy(&xhci->mem);
+
+    usb_bus_release(&xhci->bus);
+}
+
 static int usb_xhci_post_load(void *opaque, int version_id)
 {
     XHCIState *xhci = opaque;
@@ -3806,6 +3841,7 @@ static void xhci_class_init(ObjectClass *klass, void 
*data)
     dc->hotpluggable   = false;
     set_bit(DEVICE_CATEGORY_USB, dc->categories);
     k->init         = usb_xhci_initfn;
+    k->exit         = usb_xhci_exit;
     k->vendor_id    = PCI_VENDOR_ID_NEC;
     k->device_id    = PCI_DEVICE_ID_NEC_UPD720200;
     k->class_id     = PCI_CLASS_SERIAL_USB;
-- 
1.7.12.4